in neat (no solvent) byproducts: Me4Sn; heating of the react. mixt. at ca 60°C, then 1-2 d at room temp.; distn.; elem. anal.;

in diethyl ether soln. of tin compd. was added dropwise to suspn. of LiAlH4 in ether, stirring at room temp., addind of water, filtration; distn. in vac.; elem. anal.;

sodium in diethyl ether; ammonia byproducts: NaCl; sodium was added at stirring to suspn. of tin compd. in ether-liq.NH3 at -50°C, prepd. soln. was added dropwise to ether soln. of Me3SnCl, NH3 evapd., NaCl sepg.; concg., distn.; elem. anal.;